Is it a bad idea to charge my Pixel 3 phone with my Pixelbook charger? It'd be nice to just bring the Pixelbook charger on trips and so on.... thanks!
The Pixelbook charger is absolutely safe to use with the P3. As per USB PD spec, the phone will negotiate it's max charging rate for the given power source. In other words, you cannot overcharge the P3 with the Pixelbook charger.